SQL Server 2019 is a cross-platform database system that provides support for big data, artificial intelligence, different development languages, and many more exciting features. We have been exploring SQL Server 2019 in previous articles on SQLShack. In two previous articles, we explored enhancements in the Columnstore index, specifically.

Here’s the problem before SQL Server 2022. Take the Users table from the Stack Overflow database – it’s a bad candidate for clustered columnstore for reasons that we discuss in the class, but it’s the table most of y’all are familiar with, so we’ll start there. We’ll create a new table and put a clustered columnstore ...

SQL Server 2022 includes performance improvements such as system page latch concurrency enhancements, buffer pool parallel scan, ordered clustered columnstore indexes, improved columnstore segment elimination, In-Memory OLTP memory management, virtual log file improvements, reduced buffer pool I/O promotions, enhanced spinlock algorithms, and ...

Conclusion Columnstore Indexes were introduced in SQL Server 2012. Microsoft is doing continuous enhancements in this feature. But this feature is not being explored much for OLTP, at-least basis what I’ve seen. It’s being considered more suitable for DW and Analytic workload. Pivot is one of the costliest operation in SQL Server. I’ve to personally re-model one of the production ...

GO As in the previous article, if we try to update the table at this moment – we are supposed to get and Error: 35330 stating the columnstore index needs to be disabled prior to SQL Server 2016. This is no longer encountered. -- Attempt to Update the table UPDATE [dbo]. [MySalesOrderDetail] SET OrderQty = OrderQty +1 WHERE ...

Learn what columnstore indexes are in SQL Server, how they store data by column instead of row, and why they improve analytical query performance by 10x or more. Covers architecture, rowgroups, segments, compression, and when to use them.

The Legendary Independent Bookstore

Optimize SQL Server columnstore indexes for mixed OLTP/OLAP workloads! Learn practical tuning strategies, design patterns, and troubleshooting tips for peak performance.

Few index enhancements have been introduced that can improve query speed and efficiency as dramatically as columnstore indexes. Improvements to this feature have been introduced in each subsequent version of SQL Server and have transformed columnstore indexes into the go-to method of indexing OLAP workloads.

Explore the new features of SQL Server 2025, focusing on AI integration and enhanced database performance for modern applications.